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Not sure if this belongs here, or in the general sharpening topic, but since I use edge pro, I put it here..I'm having a hard time sharpening my Ryusen Blazen (SG2 powdered steel) knife to the 'desired level' of sharpness.I use Shapton Glass stone, and tried 1k 2K and 4k. I can't get it to be really sharp (i.e. shave arm..). I get a usable edge, but I can't manage to get it as sharp as I get a white 2 steel knife for example.Not sure what I'm doing wrong , I haven't had this knife for long, do these SG2 knives require a particularly long time in each stage ? Thanks

The Blazen (SG2 I assume) will not take as keen an edge as white steel for starters.Also ensure you create a burr full blade length.Lightly finish with your last stone (raising it just a hair's breadth).Ensure complete burr removal for that scary edge.

I have the Blazen petty (the wife's) and it gets real scary, shaving sharp.Consider stopping at 2k for a good bite.And do not go below 15 degrees per side, to prevent carbide fallout.

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alasakin

Post subject: Re: Edge pro and Ryusen Blazen

Posted: Thu Apr 25, 2013 4:54 pm

Joined: Fri Aug 03, 2012 5:53 pmPosts: 21

Thanks for the advice, I will try to do as you say. Why is stopping at 2k here better ?I was trying to sharpen at the factory angle, which seems to be just about 15-16 degrees.

When you say you can't get it to shave my first thought is you are not grinding the edge properly. Are you getting a burr?

Like Rookie said, you should be able to get the knife screaming sharp with some toothiness on a mid grit stone like a 2K. If you are not getting it that sharp my guess is you are slightly behind the edge with the angle you are using.

Try using a magic marker to paint the edge so you know you are getting the angle right. Also, it really helps to use a magnifier so you can see what you're doing.

Mark - you were spot on, a really careful look with the magnifier revealed the angle was a bit off, the knife put up some resistance, but eventually I beat it into submission... It's now pretty sharp, at least by my standards.. It required however quite a few strokes on each side, is this metal (SG2) considered hard to sharpen ?Another question : is the Idahone fine ceramic rod good to use with this type of metal ?

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